N. Khan, L. Tran, and M.F. Tappen, Training Many-Parameter Shape-from-Shading Models Using a Surface Database, Appeared in the International Conference on 3-D Digital Imaging and Modeling at ICCV 2009 [PDF]

Brendan Moore, Marshall Tappen, and Hassan Foroosh. Learning Face Appearance under Different Lighting Conditions In The Second IEEE International Conference on Biometrics: Theory, Applications, and Systems.[PDF]

2007

M. F. Tappen. “Utilizing Variational Optimization to Learn
Markov Random Fields”. Appeared in The Proceedings of the 2007 IEEE Computer Society
Conference on Computer Vision and Pattern Recognition (CVPR)[PDF] -- A sample training implementation is also available [.ZIP]